What is another word for law of equal areas?
Pronunciation: [lˈɔː ɒv ˈiːkwə͡l ˈe͡əɹi͡əz] (IPA) 
The law of equal areas is a fundamental principle in physics and astronomy that states that a planet or other celestial body will sweep out equal areas in equal times as it moves around its orbit. This law is sometimes also referred to as the law of areas or Kepler's Second Law. Synonyms for this principle may include the principle of equal areas, the law of planetary motion, and Kepler's Law of Areas. These terms all describe the same fundamental principle of orbital motion, which describes how the motion of a planet around a star is determined by the mass and gravitational attraction of the stars and planets involved.
